ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술대회 Effect of the Plasmonic Enhanced Absorption and Bias Field Enhancement in Nano-Electrode THz Photo-Conductive Antennas
Cited 0 time in scopus Download 0 time Share share facebook twitter linkedin kakaostory
저자
문기원, 이일민, 최경선, 박경현, 신준환
발행일
201508
출처
International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) 2015, pp.1-2
DOI
https://dx.doi.org/10.1109/IRMMW-THz.2015.7327844
협약과제
15ZE1100, ETRI 창의연구실 사업, 정성영
초록
Metallic nano-electrodes improve the emission efficiency of THz photo-conductive antennas. But the main enhancement mechanism has not been systematically studied. In this study, we experimentally compared the effect of plasmonic enhanced absorption and bias field enhancement at the apex of nano-fingers. We concluded that the bias field enhancement dominates over the plasmon effect at low optical excitation densities. Both effects significantly saturated as the optical excitation power increases. Thus, we fabricated a large-aperture emitter for higher output power, obtained more than 1500 nA of peak-to-peak detector current with 2.5 THz of emission bandwidth.
KSP 제안 키워드
Emission Efficiency, Enhanced absorption, Enhancement mechanism, Excitation power, Large aperture, Nano-electrodes, Output power, Photo-conductive, Plasmonic enhanced, bias field, field enhancement